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Gentoo Linux Security Advisory GLSA 201803-02 |
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https://security.gentoo.org/ |
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Severity: High |
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Title: util-linux: User-assisted execution of arbitrary code |
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Date: March 07, 2018 |
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Bugs: #649812 |
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ID: 201803-02 |
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Synopsis |
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======== |
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|
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A vulnerability was discovered in util-linux, which could potentially |
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lead to the execution of arbitrary code. |
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Background |
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========== |
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|
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util-linux is a suite of Linux programs including mount and umount, |
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programs used to mount and unmount filesystems. |
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 sys-apps/util-linux < 2.30.2-r1 >= 2.30.2-r1 |
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Description |
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=========== |
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|
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It was discovered that the umount bash-completion as provided by |
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util-linux does not escap mount point paths. |
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Impact |
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====== |
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|
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An attacker controlling a volume label could entice a user with |
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privileges to mount/umount filesystems to use umount command with auto |
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completion, possibly resulting in execution of arbitrary code with root |
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privileges. |
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Workaround |
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========== |
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Disable Bash-completion or remove |
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"/usr/share/bash-completion/completions/umount". |
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Resolution |
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========== |
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All util-linux users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=sys-apps/util-linux-2.30.2-r1" |
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|
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References |
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========== |
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[ 1 ] CVE-2018-7738 |
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https://nvd.nist.gov/vuln/detail/CVE-2018-7738 |
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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https://security.gentoo.org/glsa/201803-02 |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2018 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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https://creativecommons.org/licenses/by-sa/2.5 |
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